package com.servlets;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Vector;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import com.db.DataProcess;

/**
 * Servlet implementation class TaskStepServlet
 */
@WebServlet("/TaskStepServlet")
public class TaskStepServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public TaskStepServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		String savePath="D:/upload/steps";
        File file = new File(savePath);
        System.out.println(savePath);
        //判断上传文件的保存目录是否存在
        if (!file.exists() && !file.isDirectory()) {
            System.out.println(savePath+"目录不存在，需要创建");
            //创建目录
            file.mkdir();
        }
        //消息提示
        String message = "";
        int count=0;
        String strid ="";
        Vector files =new Vector();
        
        try{
            //使用Apache文件上传组件处理文件上传步骤：
            //1、创建一个DiskFileItemFactory工厂
            DiskFileItemFactory factory = new DiskFileItemFactory();
            //2、创建一个文件上传解析器
            ServletFileUpload upload = new ServletFileUpload(factory);
             //解决上传文件名的中文乱码
            upload.setHeaderEncoding("UTF-8"); 
            //3、判断提交上来的数据是否是上传表单的数据
            if(!ServletFileUpload.isMultipartContent(request)){
                //按照传统方式获取数据
                return;
            }
            //4、使用ServletFileUpload解析器解析上传数据，解析结果返回的是一个List<FileItem>集合，每一个FileItem对应一个Form表单的输入项
            List<FileItem> list = upload.parseRequest(request);
            for(FileItem item : list){
            	
                //如果fileitem中封装的是普通输入项的数据
                if(item.isFormField()){
                    String name = item.getFieldName();
                    //解决普通输入项的数据的中文乱码问题
                    String value = item.getString("UTF-8");
                  strid=value;
                   
                    //value = new String(value.getBytes("iso8859-1"),"UTF-8");
                   
                   //System.out.println(name + "=" + value);
                }else{//如果fileitem中封装的是上传文件
                    //得到上传的文件名称，
                	count++;
                    String filename = item.getName();
                  
                    System.out.println(filename);
                    if(filename==null || filename.trim().equals("")){
                        continue;
                    }
                    //注意：不同的浏览器提交的文件名是不一样的，有些浏览器提交上来的文件名是带有路径的，如：  c:\a\b\1.txt，而有些只是单纯的文件名，如：1.txt
                    //处理获取到的上传文件的文件名的路径部分，只保留文件名部分
                    
                    filename ="step"+count+"-"+ filename.substring(filename.lastIndexOf("\\")+1);
                    files.add(filename);
                    //获取item中的上传文件的输入流
                    InputStream in = item.getInputStream();
                    //创建一个文件输出流
                    FileOutputStream out = new FileOutputStream(savePath + "\\" + filename);
                    //创建一个缓冲区
                    byte buffer[] = new byte[1024];
                    //判断输入流中的数据是否已经读完的标识
                    int len = 0;
                    //循环将输入流读入到缓冲区当中，(len=in.read(buffer))>0就表示in里面还有数据
                    while((len=in.read(buffer))>0){
                        //使用FileOutputStream输出流将缓冲区的数据写入到指定的目录(savePath + "\\" + filename)当中
                        out.write(buffer, 0, len);
                    }
                   
                    //关闭输入流
                    in.close();
                    //关闭输出流
                    out.close();
                    //删除处理文件上传时生成的临时文件
                    item.delete();
                    message = "文件上传成功！";
                }
                
            }
           
           
        }catch (Exception e) {
            message= "文件上传失败！";
            e.printStackTrace();
            
        }
        System.out.println(strid);
        int id=Integer.parseInt(strid);
        String sql1="select * from item where id="+id+"";
        DataProcess db1=new DataProcess();
        Vector vectors =db1.getData(sql1);
        Vector vector =(Vector)vectors.get(0);
        
        
        String strfiles=(String)vector.get(20)+";";
        
        for(int j=0;j<files.size();j++) {
        	if(j==files.size()-1) {
        		strfiles+=files.get(j);
        		continue;
        	}
        	strfiles+=files.get(j);
        	strfiles+=";";
        }
        System.out.println(strfiles);
       
        String sql="update item set taskenclosure='"+strfiles+"' where id="+id+" ";
        DataProcess db =new DataProcess();
        int num =db.update(sql);
        System.out.println(num);
        request.setAttribute("projectid", strid);
        request.getRequestDispatcher("itemDetailServlet").forward(request, response);
//        request.setAttribute("message",message);
//        request.getRequestDispatcher("/message.jsp").forward(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}
